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annotate src/create_nvcmdidxs.vim @ 27449:b4c147ad4912 v8.2.4253

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patch 8.2.4253: using freed memory when substitute with function call Commit: https://github.com/vim/vim/commit/37f47958b8a2a44abc60614271d9537e7f14e51a Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jan 29 14:21:51 2022 +0000 patch 8.2.4253: using freed memory when substitute with function call Problem: Using freed memory when substitute uses a recursive function call. Solution: Make a copy of the substitute text.
author Bram Moolenaar <Bram@vim.org>
date Sat, 29 Jan 2022 15:30:04 +0100
parents 4050f0554902
children ee1019e59bef
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
27447
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1 vim9script
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2
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3 # This script generates the table nv_cmd_idx[] which contains the index in
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4 # nv_cmds[] table (normal.c) for each of the command character supported in
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5 # normal/visual mode.
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6 # This is used to speed up the command lookup in nv_cmds[].
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7 #
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8 # Script should be run using "make nvcmdidxs", every time the nv_cmds[] table
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9 # in src/normal.c changes.
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10
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11 def Create_nvcmdidxs_table()
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12 var nv_cmdtbl: list<dict<number>> = []
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13
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14 # Generate the table of normal/visual mode command characters and their
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15 # corresponding index.
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16 var idx: number = 0
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17 var ch: number
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18 while true
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19 ch = internal_get_nv_cmdchar(idx)
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20 if ch == -1
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21 break
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22 endif
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23 add(nv_cmdtbl, {idx: idx, cmdchar: ch})
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24 idx += 1
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25 endwhile
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26
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27 # sort the table by the command character
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28 sort(nv_cmdtbl, (a, b) => a.cmdchar - b.cmdchar)
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29
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30 # Compute the highest index upto which the command character can be directly
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31 # used as an index.
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32 var nv_max_linear: number = 0
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33 for i in range(nv_cmdtbl->len())
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34 if i != nv_cmdtbl[i].cmdchar
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35 nv_max_linear = i - 1
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36 break
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37 endif
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38 endfor
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39
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40 # Generate a header file with the table
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41 var output: list<string> =<< trim END
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42 /*
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43 * Automatically generated code by the create_nvcmdidxs.vim script.
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44 *
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45 * Table giving the index in nv_cmds[] to lookup based on
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46 * the command character.
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47 */
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48
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49 // nv_cmd_idx[<normal mode command character>] => nv_cmds[] index
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50 static const unsigned short nv_cmd_idx[] =
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51 {
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52 END
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53
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54 # Add each command character in comment and the corresponding index
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55 var tbl: list<string> = mapnew(nv_cmdtbl, (k, v) =>
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56 ' /* ' .. printf('%5d', v.cmdchar) .. ' */ ' ..
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57 printf('%3d', v.idx) .. ','
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58 )
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59 output += tbl
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60
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61 output += [ '};', '',
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62 '// The highest index for which',
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63 '// nv_cmds[idx].cmd_char == nv_cmd_idx[nv_cmds[idx].cmd_char]']
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64 output += ['static const int nv_max_linear = ' .. nv_max_linear .. ';']
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65
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66 writefile(output, "nv_cmdidxs.h")
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67 enddef
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68
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69 Create_nvcmdidxs_table()
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70 quit
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71
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72 # vim: shiftwidth=2 sts=2 expandtab